table {
    width: 850px;
}

@media (max-width: 780px) {
    table {
        width: 350px;
    }

    thead th,
    td {
        padding: 0 10px;
        font-size: 12px;
    }

    tbody th,
    td {
        padding: 0 10px;
        font-size: 10px;
    }
}